Last updated: August 27, 2025
In September, the average temperature in San Bartolome Hueyapan, Mexico is a comfortable 18°C (65°F). However, expect a range with minimums dipping to 9°C (49°F) and maximums reaching up to 27°C (81°F). Prepare for 251 mm (9.9 in) of precipitation spread over 25 days, contributing to a high average humidity of 82%.
In September in San Bartolome Hueyapan, the average temperature is 18°C (65°F). The maximum can reach 27°C (81°F), while the minimum can drop as low as 9°C (49°F). This pleasant climate makes San Bartolome Hueyapan an ideal destination for outdoor activities and sightseeing.
In San Bartolome Hueyapan in September, the precipitation amount is 251 mm (9.9 in) over a span of 25 days, indicating a significant amount of rainfall for that period.
In San Bartolome Hueyapan in September, humidity is 82%. With an average temperature of 18°C (65°F), this humidity feels like a warm, sticky embrace that can quickly leave travelers feeling fatigued and in need of frequent breaks to stay refreshed and hydrated.
In San Bartolome Hueyapan in September, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in San Bartolome Hueyapan, you can check here.
UV Risk Categories
Weather in San Bartolome Hueyapan varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in San Bartolome Hueyapan, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 14°C (58°F) | 8 mm (0.3 inches) | 84% | very high |
| February Weather | 16°C (61°F) | 6 mm (0.3 inches) | 78% | extreme |
| March Weather | 18°C (65°F) | 18 mm (0.7 inches) | 75% | extreme |
| April Weather | 19°C (67°F) | 44 mm (1.7 inches) | 70% | extreme |
| May Weather | 19°C (67°F) | 106 mm (4.2 inches) | 77% | extreme |
| June Weather | 19°C (66°F) | 215 mm (8.5 inches) | 76% | extreme |
| July Weather | 18°C (65°F) | 165 mm (6.5 inches) | 68% | extreme |
| August Weather | 18°C (65°F) | 209 mm (8.2 inches) | 70% | extreme |
| September Weather | 18°C (65°F) | 251 mm (9.9 inches) | 82% | extreme |
| October Weather | 17°C (64°F) | 102 mm (4.0 inches) | 91% | extreme |
| November Weather | 16°C (61°F) | 25 mm (1.0 inches) | 89% | very high |
| December Weather | 15°C (58°F) | 6 mm (0.2 inches) | 88% | very high |